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QuiPlans — Licensed Structural Engineers · PE-Stamped Plans in 25 States
QuiPlans — 7,000+ Homeowners Served · Join the QuiPlans Community
QuiPlans — Permit Success Guarantee · Plans Accepted by Building Departments
QuiPlans — Permit-Ready Plans from $1,997 · Free ADU Floor Plan Available
QuiPlans — Plans Delivered in Days — Not Months · No Architect Required
QuiPlans — 4.9/5 Average Rating · Trusted by Builders Nationwide
QuiPlans was founded by a PhD structural engineer after completing 7,000+ residential projects — frustrated that homeowners kept making expensive mistakes for lack of real planning tools. We built the platform we wished existed.
Licensed in 25 U.S. states · Engineering-backed budget planning · Permit-ready in 10–14 days
7,000+
Projects Completed
25
Licensed States
4–10
Day Delivery
PE-Stamped
Engineering Plans
Why We Built This
Founder, QuiPlans & Licensed Structural Engineers, Inc.
PhD Structural Engineering · PE Licensed in 25 States · 20+ Years Experience
"After completing over 7,000 residential engineering and permitting projects, I saw the same problem repeat itself constantly — homeowners spending $10,000, $20,000, even $50,000 on construction before they knew their lot was legally buildable, or what the project would really cost. I built QuiPlans so that every homeowner can have real budget clarity and engineering-backed guidance before they commit to a single dollar of construction."
PhD · Texas A&M Engineering
20+ years of structural design & load analysis
PE Licensed · 25 U.S. States
Full engineering authority across major ADU markets
7,000+ Residential Projects
ADU, single-family, multi-family, commercial
Licensed Structural Engineers, Inc. (LSE) has been designing and stamping structural plans for residential projects across the country for over a decade. With a team of licensed Professional Engineers (PEs) and a network of regional engineering firms, LSE has completed 7,000+ projects and holds active licenses in 25 U.S. states.
QuiPlans was built from real frustration: homeowners, investors, and contractors needed quality architectural and permit-ready plans — without months of custom design work or architect fees of $5,000–$20,000+. We pre-designed the most in-demand residential floor plans and made them available with engineering-backed cost data, ROI projections, and a full planning portal. PE-stamped engineering upgrades are available in all our licensed states.
Every plan in our catalog was designed by structural engineers — not just architects. That means structural integrity, load calculations, and code compliance are built in from the start, not retrofitted later. Our planning tools reflect the same expertise — giving homeowners the same visibility our engineering team uses on professional projects.
What We Offer
PDF plan sets for ADUs, single-family, and larger homes. Available from $99. Download immediately after purchase.
Browse PlansFull structural + MEP drawings with PE stamp and seal. Code compliance included. Delivered in 7–10 business days.
Get Engineering PlansLSE engineers are licensed in 25 states. For all other states, our licensed partner firm network ensures coverage nationwide.
Check My StateNo surprise fees. Interactive budget planner included. Permit-ready engineering from $1,297.
See All PackagesWhy Licensed Structural Engineers?
Every permit-ready plan is reviewed and stamped by a Professional Engineer (PE) licensed in your state.
Plans are designed to meet current IBC, IRC, and local codes. No retrofitting required.
Pre-designed plans eliminate months of custom design. Permit-ready drawings delivered in 7–10 business days.
LSE is licensed in 25 states. Our partner network covers additional states nationwide.
Industry standard for PE-stamped engineering runs $1,800–$2,500. Our permit-ready packages start at $1,497.
Every permit-ready order includes a dedicated project contact within 2 business days. Our engineering team is here throughout your project — not just at purchase.
Real Projects
"Got our permit approved on the first submission. The PE-stamped drawings were exactly what the city required."
Sarah M.
Homeowner · California
"Used QuiPlans for 3 ADU builds this year. The architectural sets saved us weeks and thousands in design fees."
James T.
Contractor · Texas
"Our 750 sqft ADU rents for $2,400/month. Best investment we've made."
David L.
Investor · Oregon
Have questions before you start? Our engineering team is here to help.
support@quiplans.com · We respond within 1 business day.
Start With Confidence
Know your real costs before you commit. Get a free ADU budget estimate, confirm your lot is buildable, and order permit-ready plans when you're ready — step by step, no surprises.
Engineering by Licensed Structural Engineers, Inc. · PhD founder · Texas A&M · 20+ years · 7,000+ projects